1. 1990
2. Water relations of salt stressed wheat

   Arif, H. (Awdur), Ion 1990

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

3. 1989
4. Vegetation succession following the clearance of Rhododendron in the Vale of Ffestiniog.

   Hockley, T. G. (Awdur), Hyd 1989

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

5. 1988
6. Studies of the biological activity of a novel herbicide (Triasulfuron) including studies of mobility and persistence in soils.

   Oppong, F. K. (Awdur), Hyd 1988

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

7. Cost benefit analysis and sustained yield forestry in India.

   Kumar, P. J. D. (Awdur), Price, C. (Goruchwylydd), Ion 1988

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

8. 1987
9. Forest recreation use patterns user behaviour and recreational value in Malaysia.

   Sabri, W. M. W. (Awdur), Tach 1987

   Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

10. Genetic and environmental factors in the migration of the African armyworm moth, Spodoptera exempta (Walker) (Lepidoptera :Noctuidae).

    Woodrow, K. P. (Awdur), Medi 1987

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

11. Studies of leaf growth in barley

    Maan, A. A. S. (Awdur), Ion 1987

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

12. 1986
13. Geochemical and mineralogical studies of the weathering of Silurian argillaceous rocks

    Chapman, P. (Awdur), Medi 1986

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

14. Sudies on the epidemiology of a Nigerian strain of Schistosoma haematobium with particular reference to the molluscan hosts

    Fryer, S. E. (Awdur), Maw 1986

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

15. Physiological aspects of tillering in barley (Hordeum distichum).

    Woodward, E. J. (Awdur), Ion 1986

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

16. Studies in cyclopropene chemistry.

    Dulayymi, A. R.A. (Awdur), Ion 1986

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

17. 1985
18. An economic approach to assessing the value of recreation with special reference to forest areas.

    Christensen, J. B. (Awdur), Price, C. (Goruchwylydd), Rhag 1985

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

19. The characterisation and control of ochre deposits in land drainage systems.

    Ap Dewi, I. (Awdur), Chwef 1985

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

20. Reciprocal transplantations to study local specialisation and the measurement of components of fitness.

    Mackenzie, S. (Awdur), Ion 1985

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

21. Carbon Allocation in Barley Plants

    Farrar, S. (Awdur), Farrar, J. F. (Goruchwylydd), 1985

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

22. 1984
23. The biology of reproduction in two British pulmonate slugs.

    Nicholas, J. (Awdur), Hyd 1984

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

24. 1983
25. An experimental study on the migration of the African armyworm moth, Spodoptera exempta (Walker) (Lepidoptera : Noctuidae).

    Parker, W. E. (Awdur), Medi 1983

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

26. Demography of animal modular colonies.

    Cancino, J. M. (Awdur), Meh 1983

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

27. Ecophysiology of ecotypes : An investigation in the ecophysiology of sand dune ecotypes

    Baleela, A. R. H. (Awdur), Ion 1983

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

28. 1982
29. Distribution, concentration and bonding factors affecting the performance of water repellents applied to wood

    Razzaque, M. A. (Awdur), Medi 1982

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

30. 1981
31. Biosystematic and cytological studies of mosses and liverworts.

    Abderrahman, S. M. M. (Awdur), Rhag 1981

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

32. Studies on the ecology of Littorina Obtusata

    Hollingworth, C. E. (Awdur), Medi 1981

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

33. Studies on the male reproductive cycle in the lizard Chalcides Ocellatus.

    Mahmoud, F. M. S. (Awdur), Mai 1981

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

34. Micronutrient studies on cotton growth on Syrian calcareous soils.

    Mohammad, S. Y. (Awdur), Maw 1981

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

35. 1980
36. Invasion of host tissue by infective larvae of Ascaris suum (Goeze, 1782)

    Arene, F. O. I. (Awdur), Tach 1980

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

37. Food selection by the rabbit.

    Soane, G. A. (Awdur), Ion 1980

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

38. Studies on plant-animal interactions : Terrestrial molluscs and their food plants.

    Minjarez, R.D. (Awdur), Ion 1980

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

39. 1979
40. Biochemical aspects of fascioliasis in domestic and experimental animals.

    Gameel, A. A. R. (Awdur), Meh 1979

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

41. An economic appraisal of forestry and the forest industries of Greece 1950-1990.

    Sakkas, G. A. (Awdur), Ion 1979

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

42. Studies in Antarctic palaeobotany.

    Lucas, R. C. (Awdur), Ion 1979

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

43. The history of forests and forestry in Wales up to the formation of the Forestry Commission

    Linnard, W. (Awdur), Ion 1979

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

44. 1974
45. A study of excretion in the slug Agriolimax reticulatus

    Garner, J. (Awdur), Medi 1974

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

46. 1973
47. The effects of trampling and vehicles on natural vegetation.

    Liddle, M. (Awdur), P. Greig-Smith, P. (Goruchwylydd), Mai 1973

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

48. 1970
49. Studies on organ cultures of slug reproductive tracts

    Bailey, T. G. (Awdur), Medi 1970

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

50. 1968
51. A comparative study of morphology, behaviour and ecology of Chaetogaster Limnaei ( von Baer) from several host species

    Buse, A. (Awdur), Medi 1968

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

52. 1966
53. Studies in the flora of the Rhynie chert

    Saadawy, W.E.-S. (Awdur), Meh 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

54. Studies on plant microfossils from the Carboniferous of North Wales

    Hibbert, F. A. (Awdur), Ebr 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

55. Studies on fossil plants of Karoo age from Central & Southern Africa

    Williams, P. (Awdur), Ion 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

56. The genetics and evolution of differences between closely adjacent plant populations, with special reference to heavy metal tolerance

    Antonovics, J. (Awdur), Ion 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

57. Studies on the nutrition and feeding of the larvae of the large cabbage white butterfly, Pieris brassicae L.

    Akhtar, M. (Awdur), 1966

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

58. 1965
59. Comparative studies in the pathology of radiomimetic conditions

    Mason, J. (Awdur), Medi 1965

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

60. 1963
61. An ecological study of Chaetogaster limnaei( von Baer)

    Gruffydd, L. D. (Awdur), Ebr 1963

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

62. 1959
63. Calcareous algae of the silurian of the Welsh border

    Green, H. (Awdur), Ebr 1959

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth

64. 1958
65. A Study in the Experimental Taxonomy of some British Sphagha (section Cuspidata),with observations of their ecology.

    Agnew, S. (Awdur), 5 Mai 1958

    Traethawd ymchwil myfyriwr: Doethur mewn Athroniaeth